Rock and ore breaker.



T. W. CAPEN.

v ROCK AND one BREAKER.

APPLICATION FILED JUNE 27. 1910. 1,191,564. Patented July 18, 1916.

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T. W. CAPEN.'

ROCK AND ORE BREAKER. APPLICATION man lUNEZI. mo.

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T. W. CAPEN.

ROCK AND ORE BREAKER.

APPLICATION FILED mm: 21. 1910.

1,191,564. Patented July 18, 1916.

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THOMAS w. CAPEN, or MILWAUKEE, Wisconsin, assreuon, BY Mn sun ASSIGNMENTS, TO ALLIS-CHALMERS MANUFACTURING G01VIPANY,'A CORPORATION OEDELAWARE.

ROCK AND ORE BREAKER.

' Specification of Letters Patent.

Patented July 18, 1916.

' To all whom it may concern:

Be it known that I, THOMAS W. CAPEN, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented a certain new and useful Rock and Ore Breaker, of which the following is a specification.

This invention relates to rock and ore breakers or crushers and has for its object the breaking of rock and ore with greater facility than heretofore and the production of a breaker of great capacity.

A further and incidental object is the production of a double breaker in which the two breaking elements of each kind are so opposed as to mutually react to prevent the reaction of the breaking pressure from acting through or across the bearing surface, at least in certain directions.

A clear conception of the invention can be had by referring to the drawings accompanying this application, in which like reference characters designate similar parts in the several embodiments.

Figure 1 is a vertical central sectional View of one embodiment of the invention. Fig. 2 is a vertical central sectional view of a modification. Fig. 3 is a vertical central sectional view of a modification.

Referring to Fig. 1 of the drawing, a hopper 1 has its delivery opening opposite to the receiving opening 2 in the hollow roll or annular body 3 forming one of the breaking elements or crusher members, mounted to rotate on the shaft 14 whose axis is at right angles to the axis of concavity of an nular body 3. In the embodiments of the invention as illustrated, shaft 14 is vertical and is mounted to rotate in an upper bearing 15 and a lower bearing 19 in the frame 16 of the breaker, the lower bearing 19 also providing a step bearing 20 for the lower end of shaft 14. v

The annular body 3 is provided at each end with a spider 10. The hub 5 of each of these spiders 10 is centrally bored on the axis of annular body 3 to form bearings for the ends of shaft 7. The shaft 7 intermediate its bearings carries, or has formed integral therewith, an eccentric 6. In the illustrated embodiment of the invention this eccentric takes the form of a cylindrical shaft whose axis intersects the axis of shaft 7 in the vertical axis of the breaker. The axis of the eccentric 6 may be parallel to the arms of the shaft 7. On the eccentric 6 is rotatably mounted the crusher member or head 4, and in the illustrated embodiment of the invention has its ends formed as sphere segments coacting in similarly formed recesses in the opposed sides of hubs 5 of the sp1ders10. The ends of eccentric 6 are also similarly formed as sphere segments and coact with the side recesses. The crushing member or head 4 is located within the crushing member or body 3 and has a convex crushing surface which is opposed to the concave crushing surface of the body 3. The crushing members are approachable or gyratable relatively to each other to crush material by means of the eccentric mounting afforded by the eccentric 6. One or both ends of the shaft 7 may project beyond the hub 5 of the spider 10 and may have secured thereto a star wheel 8 by any convenient means, such as the key 9. The. spokes of the star wheel 8 project so as to extend closely adjacent to the frame 16 which has formed thereon a circle of pins 12 in the path of the spokes of the star wheel 8.

A driving means such as pulley 17 for rotating the members in the same direction to feed material along the crushing surfaces thereof by centrifugal force is secured to shaft 14 by means of key 18. A casing 11, which has been omitted from the disclosure in Fig. 2, incloses the entire upper portion of the breaker and is conveniently formed with a Slant bottom terminating at its lowest point at the discharge outlet. A plate 21 covers the top of the frame 16 of the breaker and with the hopper 1 completes the inclosure formed by the casing 11.

by 'engagement'ofthe spokes thereof with pins 12 on the frame 16 during its rotation bodily about the axis of theshaft 14. The rotation of shaft 7 will, through eccentric 6, cause the relative gyration of head 4 within the annular body 3. Rock or ore fed to the hopper 1 will be discharged into the breaker through the delivery opening thereof into the receiving opening 2 of the breaker and will then by gravity spread throughout the central annular extent of the crushing space between the'coacting breaking elements, the head a and the annular body 8. Due to the centrifugal force of rotation about the axis of the shaft, the reek or ore will then pass outwardly through the annular breaking space, being broken meanwhile by the gymtion of the head 1- within annular body 3. The broken rock or ore will be outwardly delivered through the two annular discharge outlets between the ends of the head a and the ends of the annular body 3. The broken material will be confined Within the casing 11 and dropping upon the sloping bottom thereof, will slide to the final discharge outlet of the casing.

The invention has been illustrated in an embodiment in which the breaker is made double, two parts thereof being opposed, that is, the concave body is formed as a hollow shell with its greater diameter midway between its ends and the head is formed as a double truncated cone connected at the smaller bases. The invention is capable of embodiment in the single form, it being necessary in that case to counterbalance the machine. It may be found advisable to counterbalance the star wheel in the illustrated embodiment of the invention by a suitable weight 30 fixed to the opposite end of the shaft 7 to that to which the star wheel is keyed.

The invention is further capable of embodiment as a breaker in which instead of gyrating one of the coacting breaking elements, these parts are moved, the one relative to the other, in some other way. This can be done as shown in Fig. 2 by a rotation of one of the breaking elements 2a with the shaft 26 to which it is secured by a key 27, upon an axis that is at a slight angle to the axis of the other breaking element 23, allowing said other element to be rotated as may be about bosses 25 formed on the frame 28 by the friction of the material being broken between them. In such case it will be necessary to provide suitable inlet means through the frictionally rotating breaking element, such as dividing this element into two parts spaced apart. In the case where the frictionally driven element is divided into two parts, these parts'may be mounted upon separate axes each of which is at an angle to the axis of the driven breaking element, and the two parts of the frictionally driven element can be so spaced apart as to provide a V-shaped opening 22 between them with its widest part at the top for facility in feeding thereto. Instead of having the axes of the breaking elements at an angle to each other, these may obviously be parallel to each other, thus making a parallel motion machine either of the type where one of the breaking elements is gyrated, or as disclosed in Fig. 3, where one of the elements is positively rotated while the other is driven through the friction of the material as it is being broken. The feed opening 22 into the crusher, as shown in Fig. 3 is not as extensive as at first sight might appear. The free extent of this opening during rotation is only a circle of diameter equal to the distance between the rolls or crusher heads 23. The material fed through this free circular opening drops upon the roll or crusher head 2 and is at once fed outwardly from end to end between the rolls by the rotation thereof on the axis of the shaft 14.

It should be understood that it is not desired to be limited to the exact details of construction shown and described for obvious modifications will occur to a person skilled in the art. i

It is claimed and desired to be secured by Letters Patent,-

1. In a rock and ore breaker, an annular body, means for supporting said body to rotate on an axis at an angle to its axis of annularity, a head within said annular body forming with said body coacting breaking elements, means for rotating said body on said axis at an angle to its axis of annularity, and means for moving one of said breaking elements relative to the other to cause their breaking surfaces to approach and recede from each other.

2. In a rock and ore breaker, an annular body, means for supporting said body to rotate on an axis at right angles to its axis of annularity, a head within said annular body, means for gyrating said head, and means for rotating said body.

3. In a rock and ore breaker, an annular body, means for supporting said bodyv to retate on an axis at right angles to its axis of annularity, a head within said annular body forming-with said body coacting breaking elements, means for rotating said body on said axis at right angles to its axis of annularity, and means for moving at least one of said breaking elements for causing relative gyration of one of said elements with respect to the other of said elements.

4. In a rock and ore breaker, two breaking elements, means for rotating said breaking elements about a common axis, and means for additionally moving at least one of said breaking elements for causing relative gyration of one of said elements with respect to the other of said elements.

5. In a rock and ore breaker, breaking elements forming a pair of opposed gyratory crushers the breaking elements of the one being independent of the breaking elements of the other, and means for rotating said elements on an axis passing between said gyratory crushers, said elements being formed to permit continuous feeding of material from end to end of said crushers.

6. In a rock and ore breaker, breaking elements forming a pair of opposed orushers, the breaking elements of the one being independent of the breaking elements of the 10 other, and means for rotating said elements on an axis passing between said crushers, said elements being formed to permit continuous feeding of material from end to end of said crushers.

In testimony whereof, I aflix my signature 15 Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

